1194629326081 has 3 divisors (see below), whose sum is σ = 1194630419073. Its totient is φ = 1194628233090.

The previous prime is 1194629326073. The next prime is 1194629326159. The reversal of 1194629326081 is 1806239264911.

The square root of 1194629326081 is 1092991.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1194629326081 - 2³ = 1194629326073 is a prime.

It is a super-2 number, since 2×1194629326081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1194629326021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 546496 + ... + 1639486.

It is an arithmetic number, because the mean of its divisors is an integer number (398210139691).

Almost surely, 2^{1194629326081} is an apocalyptic number.

1194629326081 is the 1092991-st square number.

1194629326081 is the 546496-th centered octagonal number.

It is an amenable number.

1194629326081 is a deficient number, since it is larger than the sum of its proper divisors (1092992).

1194629326081 is an frugal number, since it uses more digits than its factorization.

1194629326081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185982 (or 1092991 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 1194629326081 in words is "one trillion, one hundred ninety-four billion, six hundred twenty-nine million, three hundred twenty-six thousand, eighty-one".